A3906

更新时间： 2024-11-07 03:16:31

品牌	Logo	应用领域
急速微 - ALLEGRO		驱动器
页数	文件大小	规格书
10页	319K
描述
Low Voltage Stepper and Single/Dual DC Motor Driver

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数据手册

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A3906 数据手册

A3906

Low Voltage Stepper and Single/Dual DC Motor Driver

Features and Benefits

Description

▪ 2.5 to 9 V operation

Designed for pulse width modulated (PWM) control of low

voltage stepper motors, and single and dual DC motors, the

A3906 is capable of output currents up to 1 A per channel and

operating voltages from 2.5 to 9 V.

▪ Internal PWM current limit control

▪ Synchronous rectification for reduced power dissipation

▪ Peak current output flag

▪ Undervoltage lockout

▪ Low R_DS(on)outputs

▪ Small package

▪ Brake mode for DC motors

▪ Sleep function

▪ Crossover-current protection

▪ Thermal shutdown

The A3906 has an internal fixed off-time PWM timer that

sets a peak current based on the selection of a current sense

resistor. An overcurrent output flag is provided that notifies

the user when the current in the motor winding reaches the

peak current determined by the sense resistor. The fault output

does not affect driver operation.

TheA3906isprovidedina20-contact,4 mm×4 mm,0.75 mm

nominal overall height QFN, with exposed pad for enhanced

thermal dissipation. It is lead (Pb) free, with 100% matte tin

leadframe plating.

Package: 20-contact QFN (suffix ES)

Applications include the following:

▪ Digital still cameras (DSC)

▪ Cell phone cameras

▪ USB powered devices

▪ Battery powered devices

Approximate size

Typical Applications

0.1 μF

CP1

CP2 CP3

CP4

CP1

CP2 CP3

CP4

VCP

0.1 μF

SLEEP

VBB

SLEEP

VBB

A3906

10 μF

10 V

A3906

10 μF

10 V

IN1

IN2

IN3

IN4

IN1

IN2

IN3

IN4

OUT1A

OUT1B

+5 V

SENSE1

+5 V

SENSE1

OUT2A

FL1

FL2

FL1

FL2

OUT2B

SENSE2

GND

Dual DC motor application

Stepper motor application

3906-DS, Rev. 1

12 3 4 5 6 7...10

中文翻译

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